var tabFilter, menu = [], liIndex, curNav, delMenu;
layui.define(["element", "jquery"], function (exports) {
    var element = layui.element,
        $ = layui.jquery,
        layId,
        Tab = function () {
            this.tabConfig = {
                closed: true,
                openTabNum: 10,
                tabFilter: "bodyTab"
            }
        };

    //显示左侧菜单
    if ($(".navBar").html() == '') {
        $.ajax({
            url: _basePath + "/sys/menu/getMenu",
            dataType: "json",
            success: function (data) {
                if (typeof data !== 'undefined' && data.resCode == 0) {
                    $(".navBar").html(navBar(data['resultList'])).height($(window).height() - 230);
                    element.init();  //初始化页面元素
                    $(window).resize(function () {
                        $(".navBar").height($(window).height() - 230);
                    })
                }
            }
        });
    }

    //参数设置
    Tab.prototype.set = function (option) {
        var _this = this;
        $.extend(true, _this.tabConfig, option);
        return _this;
    };

    //通过title获取lay-id
    Tab.prototype.getLayId = function (title) {
        $(".layui-tab-title.top_tab li").each(function () {
            if ($(this).find("cite").text() === title) {
                layId = $(this).attr("lay-id");
            }
        });
        return layId;
    };
    //通过title判断tab是否存在
    Tab.prototype.hasTab = function (title) {
        var tabIndex = -1;
        $(".layui-tab-title.top_tab li").each(function () {
            if ($(this).find("cite").text() === title) {
                tabIndex = 1;
            }
        });
        return tabIndex;
    };

    //右侧内容tab操作
    var tabIdIndex = 0;
    Tab.prototype.tabAdd = function (_this) {
        if (window.sessionStorage.getItem("menu")) {
            menu = JSON.parse(window.sessionStorage.getItem("menu"));
        }
        var that = this;
        var openTabNum = that.tabConfig.openTabNum;
        tabFilter = that.tabConfig.tabFilter;
        var title = '';
        if (that.hasTab(_this.find("cite").text()) === -1 && _this.siblings("dl.layui-nav-child").length === 0) {
            if ($(".layui-tab-title.top_tab li").length === openTabNum) {
                layer.msg('只能同时打开' + openTabNum + '个选项卡哦。不然系统会卡的！');
                return;
            }
            tabIdIndex++;
            if (_this.find("i.layui-icon").length > 0) {
                title += '<i class="layui-icon">' + _this.find("i.layui-icon").attr("data-icon") + '</i>';
            }
            title += '<cite>' + _this.find("cite").text() + '</cite>';
            title += '<i class="layui-icon layui-unselect layui-tab-close" data-id="' + tabIdIndex + '">&#x1006;</i>';
            element.tabAdd(tabFilter, {
                title: title,
                content: "<iframe src='" + _this.attr("data-url") + "' data-id='" + tabIdIndex + "'></frame>",
                id: new Date().getTime()
            });

            //当前窗口内容
            var curmenu = {
                "icon": _this.find("i.layui-icon").length > 0 ? _this.find("i.layui-icon").attr("data-icon") : '',
                "title": _this.find("cite").text(),
                "href": _this.attr("data-url"),
                "layId": new Date().getTime()
            };
            menu.push(curmenu);
            window.sessionStorage.setItem("menu", JSON.stringify(menu)); //打开的窗口
            window.sessionStorage.setItem("curmenu", JSON.stringify(curmenu));  //当前的窗口
            element.tabChange(tabFilter, that.getLayId(_this.find("cite").text()));
        } else {
            //当前窗口内容
            var curmenu = {
                "icon": _this.find("i.layui-icon").length > 0 ? _this.find("i.layui-icon").attr("data-icon") : '',
                "title": _this.find("cite").text(),
                "href": _this.attr("data-url"),
                "layId": new Date().getTime()
            };
            window.sessionStorage.setItem("curmenu", JSON.stringify(curmenu));  //当前的窗口
            element.tabChange(tabFilter, that.getLayId(_this.find("cite").text()));
        }
    };
    $(document).on("click", ".top_tab li", function () {
        //切换后获取当前窗口的内容
        var menu = JSON.parse(window.sessionStorage.getItem("menu"));
        var curmenu = menu[$(this).index() - 1];
        if ($(this).index() == 0) {
            window.sessionStorage.setItem("curmenu", '');
        } else {
            window.sessionStorage.setItem("curmenu", JSON.stringify(curmenu));
            if (window.sessionStorage.getItem("curmenu") == "undefined") {
                //如果删除的不是当前选中的tab,则将curmenu设置成当前选中的tab
                if (curNav != JSON.stringify(delMenu)) {
                    window.sessionStorage.setItem("curmenu", curNav);
                } else {
                    window.sessionStorage.setItem("curmenu", JSON.stringify(menu[liIndex - 1]));
                }
            }
        }
        element.tabChange(tabFilter, $(this).attr("lay-id")).init();
    });

    //删除tab
    $(document).on("click", ".top_tab li i.layui-tab-close", function () {
        //删除tab后重置session中的menu和curmenu
        liIndex = $(this).parent("li").index();
        var menu = JSON.parse(window.sessionStorage.getItem("menu"));
        //获取被删除元素
        delMenu = menu[liIndex - 1];
        var curmenu = window.sessionStorage.getItem("curmenu") == "undefined" ? "undefined" : window.sessionStorage.getItem("curmenu") == "" ? '' : JSON.parse(window.sessionStorage.getItem("curmenu"));
        if (JSON.stringify(curmenu) != JSON.stringify(menu[liIndex - 1])) {  //如果删除的不是当前选中的tab
            // window.sessionStorage.setItem("curmenu",JSON.stringify(curmenu));
            curNav = JSON.stringify(curmenu);
        } else {
            if ($(this).parent("li").length > liIndex) {
                window.sessionStorage.setItem("curmenu", curmenu);
                curNav = curmenu;
            } else {
                window.sessionStorage.setItem("curmenu", JSON.stringify(menu[liIndex - 1]));
                curNav = JSON.stringify(menu[liIndex - 1]);
            }
        }
        menu.splice((liIndex - 1), 1);
        window.sessionStorage.setItem("menu", JSON.stringify(menu));
        element.tabDelete("bodyTab", $(this).parent("li").attr("lay-id")).init();
    });

    var bodyTab = new Tab();
    exports("bodyTab", function (option) {
        return bodyTab.set(option);
    });
});